Insulator bracket and support



Oct. 18, 1932. FORT 1,883,671

INSULATOR BRACKET AND SUPPORT Filed Aug. 29, 1929 INVENTOR Lou a}; Esra? BY ATTORNEY 7-550 ter line of the support, thereby permitting Patented Oct. 18, 1932 PATENT OFFICE LOUIS FORT, OF JERSEY CITY, NEW JERSEY INSULATOR BRACKET AND SUPPORT Application filed August 29, 1929. Serial No. 389,172.

My invention relates to that type of insulator supports which are termed racks, and the primary purpose of the invention is to provide an insulator rack which is universal and fiexible in its application in that it is applicable to any of the known multiple wire transmission systemsand is also convertible from one to the other without detaching the entire rack from its support.

In constructing insulator racks, it has been the common practice to secure a plurality of lug brackets to a'common base or support, which in turn is fastened to the support utiliz'ed in stringing the wires. The insulators are carried between brackets on a common insulator pin extending through all of the lug brackets. In such a construction, it is necessary to make up special insulator racks for each of the various multiple wire systems in use. In the event that a system is changed,

it becomes necessary to change all of the insulator racks in their entirety since the absence of flexibility in the construction does not permit the addition or subtraction of insulators.

In accordance with my invention, I construct an insulator rack to which insulators may be added to or subtracted therefrom without disassembling the insulator bracket and without removing it from the pole or rack to which it is fastened.

Among the characteristics of my invention is the fact that each lug bracket is provided with a separate fastening foot by means of which it may be fastened to the rack support. An important feature of my invention is the fact that the insulator rack is made up of a plurality of individual insulator brackets which are detachably secured together, thereby making it possible to vary the number of insulators comprised in the rack.

Another'important feature of my invention is the fact that the distance between brackets may be varied, thereby varying the distance between the centers of successive insulators.

The invention also contemplates a constructionwhich is made up of a plurality of units, the lug portion of successive units being oil'- set on opposite sides of the longitudinal centhe removal or insertion of individual insulator pins without disassembling the complete bracket.

Specifically, I provide a construction which consists of an assembly of a plurality of independent lug brackets, each of which is complete and separable from the others and has its own separate fastening feet. The brackets are secured together by a throughbolt and spaced apart by spacers surrounding the bolt. The bracket may be so constructed that all of the individual lug brackets are in align ment, in which case a single insulator pin extending through all of the brackets carries the individual insulators between successive brackets. In this construction, in the event that it is decided to add or subtract an insi later, the throughbo-lt and the common insulator pin are removed and an individual bracket added or subtracted, a longer or 7 shorter throughbolt and insulator pin being used, depending upon Whether an insulator is added or subtracted.

An alternative or modified form of the invention is that in which the individual brack- 3' ets are grouped together in pairs. Each pairconstitutes a unit which carries an insulator on an 1nsulator pin ext-ending between the two brackets of the unit. As in the previous construction, the units are secured together i by a common throughbolt and the number of units may be increased or decreased by employing a throughbolt of appropriate length. In this modified construction which utilizes a plurality of units, the lug brackets of succes- Figure 1 is a side elevation of an insulator bracket and support for a three wire system with parts broken away to show the assembly thereof;

Figure 2 is an end elevation of the same;

Figure 3 is a plan of the same;

Figure 4 is a side elevation of a modified construction embodying my invention;

Figure 5 is an end elevation of the same; and,

Figure 6 is a plan of the same.

In the embodiment illustrated in Figs. 1 to 3 inclusive, there is shown a construction in which a plurality of individual brackets are dctachably secured together and spaced apart. Insulators are carried between successive brackets by a common pin extending through the aligned brackets.

The individual brackets and supports consist of a fastening foot 1 and an integral lug bracket 2. The bracket is made from solid metal and is bored at the upper end thereof to receive an insulator-pin. Near the center thereof, a second hole is bored which is adapted to receive a throughbolt for securing two or more brackets together. Immediately below the central hole in the bracket, the bracket is bifurcated forming angular extensions which constitute the fastening foot. 7

An insulator rack comprises two or more of the individual brackets secured together by a throughbolt 3. Spacers 4 in the form of tubes, the ends of which abut against the brackets, surround the throughbolt between successive brackets and serve to keep the brackets spaced apart. A common insulator pin 5 which is adapted to carry insulators 6 between successive brackets extends through the aligned holes in the upper end of all of the brackets.

In the modified form shown in Figures 4, 5 and 6, the insulator rack for a multiple wire systemis made up of a plurality of units, thenumber of units being equal to the number of wires used in the system. Each unit comprises two brackets, each bracket including a fastening foot 7 and a lug bracket 8 which is inclined to the plane normal to the fastening foot. All of the individual brackets making-up the rack are secured together by means of a throughbolt 9. The brackets of each unit are separated by tubular spacers 10 to which they may be rigidly secured as by welding if desired. Each unit carries an individual insulator pin 11, upon which the insulator 12 is supported. By reversing'successive units with respect to the inclination of the lug brackets, successive units are offset on opposite sides of a longitudinal central plane which contains the centerline of the throughbolt 9 and is perpendicular to the plane normal to the fastening foot. By mounting the units in this manner, the individual insulator pins of a unit may be removed for the purpose of replacing a broken insulator without disturbin any of the other units in the multiple rack. bpacers may also be provided between successive units to increase the distance between the centers of successive insulators if such is desired.

It will be readily apparent that the insulator brackets and supports above particularly described are flexible in {their application in that units may be added or subtracted therefrom without removing the complete bracket from the support to which it is attached, and permits the dealer to carry in stock only the individual brackets which can be made into a suitable rack as occasion demands.

It is obvious that various changes ma be made in the illustrated embodiments a we particularly described within the principle and scope of my invention as expressed in the appended claims. 7

I claim:

1. An insulator rack for insulating electric wires from their supports comprising a plurality of brackets detachably secured together and spaced apart, each bracket including a fastening foot for fastening the bracket to asupport and a lug bracket adapted to receive an insulator pin, a pair of said brackets constituting a unit, an insulator pin carried by each unit, and an insulator between the brackets of each unit carried by said pin, the lug brackets of successive units being offset on opposite sides of the center line of the rack.

2. An insulator rack for insulating electric wires from their supports comprising a plurality of brackets detachably secured together and spaced apart, each bracket including a fastening foot for fastening the bracket to a support and an inclined lug bracket adapted to receive an insulator pin, a pair of said brackets constituting a unit,

an insulator pin carried by each unit, and

an insulator between the brackets of each unit carried by the pin, successive'units being reversed relative to the inclination of the lug brackets so that the insulator pins of successive units are offset on opposite sides of the longitudinal center line of said rack.

3. An insulator rack for insulating electric wires from their supports comprising a plurality of separate independent brackets detachably assembled on a common member extending through the brackets, an insulator pin extending through the brackets, and an insulator on the pin between the brackets.

4. An insulator rack for insulating electric wires from their support comprising a plurality of separate brackets detachably assembled on a common member extending through the brackets, a separate fastening foot on each of said brackets for fastening the bracket to a support, an insulator pin extending through the brackets, and an insulator on the pin between the brackets.

5. An insulator rack for insulating electric wires from their support comprising a plurality of separate brackets detachably assembled on a common member extending through the brackets, a separate fastening foot on each bracket for fastening the bracket to a support, an insulator pin extending through the brackets, and insulators on the insulator pin between successive brackets.

6. An insulator rack for insulating electric wires from their supports comprising a plurality of separate brackets detachably assembled on a common member extending through the brackets, tubular spacing members surrounding the member extending through the brackets, a separate fastening foot on each bracket for fastening the bracket to a support, an insulator pin extending through the brackets, and an insulator on the pin between the brackets.

7. An insulatorbracket adapted to be as sembled with other similar brackets to form an insulating rack comprising a central portion having an opening therethrough for an assembly member, a fastening foot extend ing from said central portion for fastening the bracket to a support, and a lug bracket extending from said central portion substantially oppositely to said fastening foot and having an opening therethrough for an insulator pin, the fastening foot and the lug bracket lying in a common plane perpendicular to the axis of the openings through the bracket.

8; An insulator bracket adapted to be assembled with other similar brackets to form an insulating rack comprising a central portion having an opening therethrough for an assembly member, a fastening foot extending from said central portion for fastening the bracket to a support, and a lug bracket extending from said central portion substantially oppositely to said fastening foot and having an opening therethrough for an insulator pin, the fastening foot and the lug bracket lying in a common plane perpendicular'to the axis of the openings through the bracket, and the lug bracket being inclined Within the plane of the bracket to the central line of the bracket.

In witness whereof, I hereunto subscribe my signature.

LOUIS FORT. 

